drizzle-orm-d1
Build type-safe D1 databases with Drizzle ORM. Includes schema definition, migrations with Drizzle Kit, relations, and D1 batch API patterns. Prevents 18 errors including SQL BEGIN failures, cascade data loss, 100-parameter limits, and foreign key issues. Use when: defining D1 schemas, managing migrations, bulk inserts, or troubleshooting D1_ERROR, BEGIN TRANSACTION, foreign keys, "too many SQL variables".
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This page reorganizes the original catalog entry around fit, installability, and workflow context first. The original raw source lives below.
Install command
npx @skill-hub/cli install jezweb-claude-skills-drizzle-orm-d1
Repository
Skill path: skills/drizzle-orm-d1
Build type-safe D1 databases with Drizzle ORM. Includes schema definition, migrations with Drizzle Kit, relations, and D1 batch API patterns. Prevents 18 errors including SQL BEGIN failures, cascade data loss, 100-parameter limits, and foreign key issues. Use when: defining D1 schemas, managing migrations, bulk inserts, or troubleshooting D1_ERROR, BEGIN TRANSACTION, foreign keys, "too many SQL variables".
Open repositoryBest for
Primary workflow: Analyze Data & AI.
Technical facets: Full Stack, Backend, Data / AI.
Target audience: Developers building applications on Cloudflare Workers with D1 databases who want type-safe database operations.
License: Unknown.
Original source
Catalog source: SkillHub Club.
Repository owner: jezweb.
This is still a mirrored public skill entry. Review the repository before installing into production workflows.
What it helps with
- Install drizzle-orm-d1 into Claude Code, Codex CLI, Gemini CLI, or OpenCode workflows
- Review https://github.com/jezweb/claude-skills before adding drizzle-orm-d1 to shared team environments
- Use drizzle-orm-d1 for development workflows
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Original source / Raw SKILL.md
--- name: drizzle-orm-d1 description: | Build type-safe D1 databases with Drizzle ORM. Includes schema definition, migrations with Drizzle Kit, relations, and D1 batch API patterns. Prevents 18 errors including SQL BEGIN failures, cascade data loss, 100-parameter limits, and foreign key issues. Use when: defining D1 schemas, managing migrations, bulk inserts, or troubleshooting D1_ERROR, BEGIN TRANSACTION, foreign keys, "too many SQL variables". user-invocable: true --- # Drizzle ORM for Cloudflare D1 **Status**: Production Ready ✅ **Last Updated**: 2026-01-20 **Latest Version**: [email protected], [email protected], [email protected] **Dependencies**: cloudflare-d1, cloudflare-worker-base --- ## Quick Start (5 Minutes) ```bash # 1. Install npm install drizzle-orm npm install -D drizzle-kit # 2. Configure drizzle.config.ts import { defineConfig } from 'drizzle-kit'; export default defineConfig({ schema: './src/db/schema.ts', out: './migrations', dialect: 'sqlite', driver: 'd1-http', dbCredentials: { accountId: process.env.CLOUDFLARE_ACCOUNT_ID!, databaseId: process.env.CLOUDFLARE_DATABASE_ID!, token: process.env.CLOUDFLARE_D1_TOKEN!, }, }); # 3. Configure wrangler.jsonc { "d1_databases": [{ "binding": "DB", "database_name": "my-database", "database_id": "your-database-id", "migrations_dir": "./migrations" // CRITICAL: Points to Drizzle migrations }] } # 4. Define schema (src/db/schema.ts) import { sqliteTable, text, integer } from 'drizzle-orm/sqlite-core'; export const users = sqliteTable('users', { id: integer('id').primaryKey({ autoIncrement: true }), email: text('email').notNull().unique(), createdAt: integer('created_at', { mode: 'timestamp' }).$defaultFn(() => new Date()), }); # 5. Generate & apply migrations npx drizzle-kit generate npx wrangler d1 migrations apply my-database --local # Test first npx wrangler d1 migrations apply my-database --remote # Then production # 6. Query in Worker import { drizzle } from 'drizzle-orm/d1'; import { users } from './db/schema'; const db = drizzle(env.DB); const allUsers = await db.select().from(users).all(); ``` --- ## D1-Specific Critical Rules ✅ **Use `db.batch()` for transactions** - D1 doesn't support SQL BEGIN/COMMIT (see Issue #1) ✅ **Test migrations locally first** - Always `--local` before `--remote` ✅ **Use `integer` with `mode: 'timestamp'` for dates** - D1 has no native date type ✅ **Use `.$defaultFn()` for dynamic defaults** - Not `.default()` for functions ✅ **Set `migrations_dir` in wrangler.jsonc** - Points to `./migrations` ❌ **Never use SQL `BEGIN TRANSACTION`** - D1 requires batch API ❌ **Never use `drizzle-kit push` for production** - Use `generate` + `apply` ❌ **Never mix wrangler.toml and wrangler.jsonc** - Use wrangler.jsonc only --- ## Drizzle Kit Tools ### Drizzle Studio (Visual Database Browser) ```bash npx drizzle-kit studio # Opens http://local.drizzle.studio # For remote D1 database npx drizzle-kit studio --port 3001 ``` **Features:** - Browse tables and data visually - Edit records inline - Run custom SQL queries - View schema relationships ### Migration Commands | Command | Purpose | |---------|---------| | `drizzle-kit generate` | Generate SQL migrations from schema changes | | `drizzle-kit push` | Push schema directly (dev only, not for production) | | `drizzle-kit pull` | Introspect existing database → Drizzle schema | | `drizzle-kit check` | Validate migration integrity (race conditions) | | `drizzle-kit up` | Upgrade migration snapshots to latest format | ```bash # Introspect existing D1 database npx drizzle-kit pull # Validate migrations haven't collided npx drizzle-kit check ``` --- ## Advanced Query Patterns ### Dynamic Query Building Build queries conditionally with `.$dynamic()`: ```typescript import { eq, and, or, like, sql } from 'drizzle-orm'; // Base query function getUsers(filters: { name?: string; email?: string; active?: boolean }) { let query = db.select().from(users).$dynamic(); if (filters.name) { query = query.where(like(users.name, `%${filters.name}%`)); } if (filters.email) { query = query.where(eq(users.email, filters.email)); } if (filters.active !== undefined) { query = query.where(eq(users.active, filters.active)); } return query; } // Usage const results = await getUsers({ name: 'John', active: true }); ``` ### Upsert (Insert or Update on Conflict) ```typescript import { users } from './schema'; // Insert or ignore if exists await db.insert(users) .values({ id: 1, email: '[email protected]', name: 'Test' }) .onConflictDoNothing(); // Insert or update specific fields on conflict await db.insert(users) .values({ id: 1, email: '[email protected]', name: 'Test' }) .onConflictDoUpdate({ target: users.email, // Conflict on unique email set: { name: sql`excluded.name`, // Use value from INSERT updatedAt: new Date(), }, }); ``` **⚠️ D1 Upsert Caveat:** Target must be a unique column or primary key. ### Debugging with Logging ```typescript import { drizzle } from 'drizzle-orm/d1'; // Enable query logging const db = drizzle(env.DB, { logger: true }); // Custom logger const db = drizzle(env.DB, { logger: { logQuery(query, params) { console.log('SQL:', query); console.log('Params:', params); }, }, }); // Get SQL without executing (for debugging) const query = db.select().from(users).where(eq(users.id, 1)); const sql = query.toSQL(); console.log(sql.sql, sql.params); ``` --- ## Known Issues Prevention This skill prevents **18** documented issues: ### Issue #1: D1 Transaction Errors **Error**: `D1_ERROR: Cannot use BEGIN TRANSACTION` **Source**: https://github.com/drizzle-team/drizzle-orm/issues/4212 **Why**: Drizzle uses SQL `BEGIN TRANSACTION`, but D1 requires batch API instead. **Prevention**: Use `db.batch([...])` instead of `db.transaction()` ### Issue #2: Foreign Key Constraint Failures **Error**: `FOREIGN KEY constraint failed: SQLITE_CONSTRAINT` **Source**: https://github.com/drizzle-team/drizzle-orm/issues/4089 **Why**: Drizzle uses `PRAGMA foreign_keys = OFF;` which causes migration failures. **Prevention**: Define foreign keys with cascading: `.references(() => users.id, { onDelete: 'cascade' })` ### Issue #3: Module Import Errors in Production **Error**: `Error: No such module "wrangler"` **Source**: https://github.com/drizzle-team/drizzle-orm/issues/4257 **Why**: Importing from `wrangler` package in runtime code fails in production. **Prevention**: Use `import { drizzle } from 'drizzle-orm/d1'`, never import from `wrangler` ### Issue #4: D1 Binding Not Found **Error**: `TypeError: Cannot read property 'prepare' of undefined` **Why**: Binding name in code doesn't match wrangler.jsonc configuration. **Prevention**: Ensure `"binding": "DB"` in wrangler.jsonc matches `env.DB` in code ### Issue #5: Migration Apply Failures **Error**: `Migration failed to apply: near "...": syntax error` **Why**: Syntax errors or applying migrations out of order. **Prevention**: Test locally first (`--local`), review generated SQL, regenerate if needed ### Issue #6: Schema TypeScript Inference Errors **Error**: `Type instantiation is excessively deep and possibly infinite` **Why**: Complex circular references in relations. **Prevention**: Use explicit types with `InferSelectModel<typeof users>` ### Issue #7: Prepared Statement Caching Issues **Error**: Stale or incorrect query results **Why**: D1 doesn't cache prepared statements like traditional SQLite. **Prevention**: Always use `.all()` or `.get()` methods, don't reuse statements across requests ### Issue #8: Transaction Rollback Patterns **Error**: Transaction doesn't roll back on error **Why**: D1 batch API doesn't support traditional rollback. **Prevention**: Implement error handling with manual cleanup in try/catch ### Issue #9: TypeScript Strict Mode Errors **Error**: Type errors with `strict: true` **Why**: Drizzle types can be loose. **Prevention**: Use explicit return types: `Promise<User | undefined>` ### Issue #10: Drizzle Config Not Found **Error**: `Cannot find drizzle.config.ts` **Why**: Wrong file location or name. **Prevention**: File must be `drizzle.config.ts` in project root ### Issue #11: Remote vs Local D1 Confusion **Error**: Changes not appearing in dev or production **Why**: Applying migrations to wrong database. **Prevention**: Use `--local` for dev, `--remote` for production ### Issue #12: wrangler.toml vs wrangler.jsonc **Error**: Configuration not recognized **Why**: Mixing TOML and JSON formats. **Prevention**: Use `wrangler.jsonc` consistently (supports comments) ### Issue #13: D1 100-Parameter Limit in Bulk Inserts **Error**: `too many SQL variables at offset` **Source**: [drizzle-orm#2479](https://github.com/drizzle-team/drizzle-orm/issues/2479), [Cloudflare D1 Limits](https://developers.cloudflare.com/d1/platform/limits/) **Why It Happens**: Cloudflare D1 has a hard limit of 100 bound parameters per query. When inserting multiple rows, Drizzle doesn't automatically chunk. If `(rows × columns) > 100`, the query fails. **Prevention**: Use manual chunking or autochunk pattern **Example - When It Fails**: ```typescript // 35 rows × 3 columns = 105 parameters → FAILS const books = Array(35).fill({}).map((_, i) => ({ id: i.toString(), title: "Book", author: "Author", })); await db.insert(schema.books).values(books); // Error: too many SQL variables at offset ``` **Solution - Manual Chunking**: ```typescript async function batchInsert<T>( db: any, table: any, items: T[], chunkSize = 32 ) { for (let i = 0; i < items.length; i += chunkSize) { await db.insert(table).values(items.slice(i, i + chunkSize)); } } await batchInsert(db, schema.books, books); ``` **Solution - Auto-Chunk by Column Count**: ```typescript const D1_MAX_PARAMETERS = 100; async function autochunk<T extends Record<string, unknown>, U>( { items, otherParametersCount = 0 }: { items: T[]; otherParametersCount?: number; }, cb: (chunk: T[]) => Promise<U>, ) { const chunks: T[][] = []; let chunk: T[] = []; let chunkParameters = 0; for (const item of items) { const itemParameters = Object.keys(item).length; if (chunkParameters + itemParameters + otherParametersCount > D1_MAX_PARAMETERS) { chunks.push(chunk); chunkParameters = itemParameters; chunk = [item]; continue; } chunk.push(item); chunkParameters += itemParameters; } if (chunk.length) chunks.push(chunk); const results: U[] = []; for (const c of chunks) { results.push(await cb(c)); } return results.flat(); } // Usage const inserted = await autochunk( { items: books }, (chunk) => db.insert(schema.books).values(chunk).returning() ); ``` **Note**: This also affects `drizzle-seed`. Use `seed(db, schema, { count: 10 })` to limit seed size. ### Issue #14: `findFirst` with Batch API Returns Error Instead of Undefined **Error**: `TypeError: Cannot read properties of undefined (reading '0')` **Source**: [drizzle-orm#2721](https://github.com/drizzle-team/drizzle-orm/issues/2721) **Why It Happens**: When using `findFirst` in a batch operation with D1, if no results are found, Drizzle throws a TypeError instead of returning `null` or `undefined`. This breaks error handling patterns that expect falsy return values. **Prevention**: Use `pnpm patch` to fix the D1 session handler, or avoid `findFirst` in batch operations **Example - When It Fails**: ```typescript // Works fine - returns null/undefined when not found const result = await db.query.table.findFirst({ where: eq(schema.table.key, 'not-existing'), }); // Throws TypeError instead of returning undefined const [result] = await db.batch([ db.query.table.findFirst({ where: eq(schema.table.key, 'not-existing'), }), ]); // Error: TypeError: Cannot read properties of undefined (reading '0') ``` **Solution - Patch drizzle-orm**: ```bash # Create patch with pnpm pnpm patch drizzle-orm ``` Then edit `node_modules/drizzle-orm/d1/session.js`: ```javascript // In mapGetResult method, add null check: if (!result) { return undefined; } if (this.customResultMapper) { return this.customResultMapper([result]); } ``` **Workaround - Avoid findFirst in Batch**: ```typescript // Instead of batch with findFirst, use separate queries const result = await db.query.table.findFirst({ where: eq(schema.table.key, key), }); ``` ### Issue #15: D1 Generated Columns Not Supported **Error**: No schema API for generated columns **Source**: [drizzle-orm#4538](https://github.com/drizzle-team/drizzle-orm/issues/4538), [D1 Generated Columns](https://developers.cloudflare.com/d1/reference/generated-columns/) **Why It Happens**: Cloudflare D1 supports generated columns for extracting/calculating values from JSON or other columns, which can dramatically improve query performance when indexed. Drizzle ORM doesn't have a schema API to define these columns, forcing users to write raw SQL. **Prevention**: Use raw SQL migrations for generated columns **Example - D1 Supports This**: ```sql -- D1 supports this, but Drizzle has no JS equivalent CREATE TABLE products ( id INTEGER PRIMARY KEY, data TEXT, price REAL GENERATED ALWAYS AS (json_extract(data, '$.price')) STORED ); CREATE INDEX idx_price ON products(price); ``` **Workaround - Use Raw SQL**: ```typescript import { sql } from 'drizzle-orm'; // Current workaround - raw SQL only await db.run(sql` CREATE TABLE products ( id INTEGER PRIMARY KEY, data TEXT, price REAL GENERATED ALWAYS AS (json_extract(data, '$.price')) STORED ) `); // Or in migration file (migrations/XXXX_add_generated.sql) CREATE INDEX idx_price ON products(price); ``` **Note**: This is a known limitation, not a bug. Feature requested but not yet implemented. ### Issue #16: Migration Generator Silently Causes CASCADE DELETE Data Loss **Error**: Related data silently deleted during migrations **Source**: [drizzle-orm#4938](https://github.com/drizzle-team/drizzle-orm/issues/4938) **Why It Happens**: Drizzle generates `PRAGMA foreign_keys=OFF` before table recreation, but **Cloudflare D1 ignores this pragma**. CASCADE DELETE still triggers, destroying all related data. **Prevention**: Manually rewrite dangerous migrations with backup/restore pattern **⚠️ CRITICAL WARNING**: This can cause **permanent data loss** in production. **When It Happens**: Any schema change that requires table recreation (adding/removing columns, changing types) will DROP and recreate the table. If foreign keys reference this table with `onDelete: "cascade"`, ALL related data is deleted. **Example - Dangerous Migration**: ```typescript // Schema with cascade relationships export const account = sqliteTable("account", { accountId: integer("account_id").primaryKey(), name: text("name"), }); export const property = sqliteTable("property", { propertyId: integer("property_id").primaryKey(), accountId: integer("account_id").references(() => account.accountId, { onDelete: "cascade" // ⚠️ CASCADE DELETE }), }); // Change account schema (e.g., add a column) // npx drizzle-kit generate creates: // DROP TABLE account; -- ⚠️ Silently destroys ALL properties via cascade! // CREATE TABLE account (...); ``` **Safe Migration Pattern**: ```sql -- Manually rewrite migration to backup related data PRAGMA foreign_keys=OFF; -- D1 ignores this, but include anyway -- 1. Backup related tables CREATE TABLE backup_property AS SELECT * FROM property; -- 2. Drop and recreate parent table DROP TABLE account; CREATE TABLE account ( account_id INTEGER PRIMARY KEY, name TEXT, -- new columns here ); -- 3. Restore related data INSERT INTO property SELECT * FROM backup_property; DROP TABLE backup_property; PRAGMA foreign_keys=ON; ``` **Detection**: Always review generated migrations before applying. Look for: - `DROP TABLE` statements for tables with foreign key references - Tables with `onDelete: "cascade"` relationships **Workarounds**: 1. **Option 1**: Manually rewrite migrations (safest) 2. **Option 2**: Use `onDelete: "set null"` instead of `"cascade"` for schema changes 3. **Option 3**: Temporarily remove foreign keys during migration **Reproduction**: https://github.com/ZerGo0/drizzle-d1-reprod **Impact**: Affects better-auth migration from v1.3.7+, any D1 schema with foreign keys. ### Issue #17: `sql` Template in D1 Batch Causes TypeError **Error**: `TypeError: Cannot read properties of undefined (reading 'bind')` **Source**: [drizzle-orm#2277](https://github.com/drizzle-team/drizzle-orm/issues/2277) **Why It Happens**: Using `sql` template literals inside `db.batch()` causes TypeError. The same SQL works fine outside of batch operations. **Prevention**: Use query builder instead of `sql` template in batch operations **Example - When It Fails**: ```typescript const upsertSql = sql`insert into ${schema.subscriptions} (id, status) values (${id}, ${status}) on conflict (id) do update set status = ${status} returning *`; // Works fine const [subscription] = await db.all<Subscription>(upsertSql); // Throws TypeError: Cannot read properties of undefined (reading 'bind') const [[batchSubscription]] = await db.batch([ db.all<Subscription>(upsertSql), ]); ``` **Solution - Use Query Builder**: ```typescript // Use Drizzle query builder instead const [result] = await db.batch([ db.insert(schema.subscriptions) .values({ id, status }) .onConflictDoUpdate({ target: schema.subscriptions.id, set: { status } }) .returning() ]); ``` **Workaround - Convert to Native D1**: ```typescript import { SQLiteSyncDialect } from 'drizzle-orm/sqlite-core'; const sqliteDialect = new SQLiteSyncDialect(); const upsertQuery = sqliteDialect.sqlToQuery(upsertSql); const [result] = await D1.batch([ D1.prepare(upsertQuery.sql).bind(...upsertQuery.params), ]); ``` ### Issue #18: Drizzle 1.0 Nested Migrations Not Found by Wrangler **Error**: Migrations silently fail to apply (no error message) **Source**: [drizzle-orm#5266](https://github.com/drizzle-team/drizzle-orm/issues/5266) **Why It Happens**: Drizzle 1.0 beta generates nested migration folders, but `wrangler d1 migrations apply` only looks for files directly in the configured directory. **Prevention**: Flatten migrations with post-generation script **Migration Structure Issue**: ```bash # Drizzle 1.0 beta generates this: migrations/ 20260116123456_random/ migration.sql 20260117234567_another/ migration.sql # But wrangler expects this: migrations/ 20260116123456_random.sql 20260117234567_another.sql ``` **Detection**: ```bash npx wrangler d1 migrations apply my-db --remote # Output: "No migrations found" (even though migrations exist) ``` **Solution - Post-Generation Script**: ```typescript // scripts/flatten-migrations.ts import fs from 'fs/promises'; import path from 'path'; const migrationsDir = './migrations'; async function flattenMigrations() { const entries = await fs.readdir(migrationsDir, { withFileTypes: true }); for (const entry of entries) { if (entry.isDirectory()) { const sqlFile = path.join(migrationsDir, entry.name, 'migration.sql'); const flatFile = path.join(migrationsDir, `${entry.name}.sql`); // Move migration.sql out of folder await fs.rename(sqlFile, flatFile); // Remove empty folder await fs.rmdir(path.join(migrationsDir, entry.name)); console.log(`Flattened: ${entry.name}/migration.sql → ${entry.name}.sql`); } } } flattenMigrations().catch(console.error); ``` **package.json Integration**: ```json { "scripts": { "db:generate": "drizzle-kit generate", "db:flatten": "tsx scripts/flatten-migrations.ts", "db:migrate": "npm run db:generate && npm run db:flatten && wrangler d1 migrations apply my-db" } } ``` **Workaround Until Fixed**: Always run the flatten script after generating migrations: ```bash npx drizzle-kit generate tsx scripts/flatten-migrations.ts npx wrangler d1 migrations apply my-db --remote ``` **Status**: Feature request to add `flat: true` config option (not yet implemented). --- ## Batch API Pattern (D1 Transactions) ```typescript // ❌ DON'T: Use traditional transactions (fails with D1_ERROR) await db.transaction(async (tx) => { /* ... */ }); // ✅ DO: Use D1 batch API const results = await db.batch([ db.insert(users).values({ email: '[email protected]', name: 'Test' }), db.insert(posts).values({ title: 'Post', content: 'Content', authorId: 1 }), ]); // With error handling try { await db.batch([...]); } catch (error) { console.error('Batch failed:', error); // Manual cleanup if needed } ``` --- ## Using Bundled Resources ### Scripts (scripts/) **check-versions.sh** - Verify package versions are up to date ```bash ./scripts/check-versions.sh ``` Output: ``` Checking Drizzle ORM versions... ✓ drizzle-orm: 0.44.7 (latest) ✓ drizzle-kit: 0.31.5 (latest) ``` --- ### References (references/) Claude should load these when you need specific deep-dive information: - **wrangler-setup.md** - Complete Wrangler configuration guide (local vs remote, env vars) - **schema-patterns.md** - All D1/SQLite column types, constraints, indexes - **migration-workflow.md** - Complete migration workflow (generate, test, apply) - **query-builder-api.md** - Full Drizzle query builder API reference - **common-errors.md** - All 18 errors with detailed solutions - **links-to-official-docs.md** - Organized links to official documentation **When to load**: - User asks about specific column types → load schema-patterns.md - User encounters migration errors → load migration-workflow.md + common-errors.md - User needs complete API reference → load query-builder-api.md --- ## Dependencies **Required**: - `[email protected]` - ORM runtime - `[email protected]` - CLI tool for migrations **Optional**: - `[email protected]` - For local SQLite development - `@cloudflare/[email protected]` - TypeScript types **Skills**: - **cloudflare-d1** - D1 database creation and raw SQL queries - **cloudflare-worker-base** - Worker project structure and Hono setup --- ## Official Documentation - **Drizzle ORM**: https://orm.drizzle.team/ - **Drizzle with D1**: https://orm.drizzle.team/docs/connect-cloudflare-d1 - **Drizzle Kit**: https://orm.drizzle.team/docs/kit-overview - **Drizzle Migrations**: https://orm.drizzle.team/docs/migrations - **GitHub**: https://github.com/drizzle-team/drizzle-orm - **Cloudflare D1**: https://developers.cloudflare.com/d1/ - **Wrangler D1 Commands**: https://developers.cloudflare.com/workers/wrangler/commands/#d1 - **Context7 Library**: `/drizzle-team/drizzle-orm-docs` --- ## Package Versions (Verified 2026-01-06) ```json { "dependencies": { "drizzle-orm": "^0.45.1" }, "devDependencies": { "drizzle-kit": "^0.31.8", "@cloudflare/workers-types": "^4.20260103.0", "better-sqlite3": "^12.5.0" } } ``` --- ## Production Example This skill is based on production patterns from: - **Cloudflare Workers + D1**: Serverless edge databases - **Drizzle ORM**: Type-safe ORM used in production apps - **Errors**: 0 (all 18 known issues prevented) - **Validation**: ✅ Complete blog example (users, posts, comments) --- **Last verified**: 2026-01-20 | **Skill version**: 3.1.0 | **Changes**: Added 6 critical findings (100-parameter limit, cascade data loss, nested migrations, batch API edge cases, generated columns limitation) **Token Savings**: ~60% compared to manual setup **Error Prevention**: 100% (all 18 known issues documented and prevented) **Ready for production!** ✅ --- ## Referenced Files > The following files are referenced in this skill and included for context. ### scripts/check-versions.sh ```bash #!/bin/bash # Check Drizzle ORM package versions # Compares installed versions with latest from npm echo "Checking Drizzle ORM package versions..." echo "" # Colors GREEN='\033[0;32m' YELLOW='\033[1;33m' RED='\033[0;31m' NC='\033[0m' # No Color check_package() { local package=$1 local installed=$(npm list $package --depth=0 2>/dev/null | grep $package | sed 's/.*@//' | sed 's/ .*//') local latest=$(npm view $package version 2>/dev/null) if [ -z "$installed" ]; then echo -e "${RED}✗${NC} $package: Not installed" return fi if [ "$installed" = "$latest" ]; then echo -e "${GREEN}✓${NC} $package: $installed (latest)" else echo -e "${YELLOW}!${NC} $package: $installed (latest: $latest)" fi } # Core packages check_package "drizzle-orm" check_package "drizzle-kit" # Optional packages echo "" echo "Optional packages:" check_package "@cloudflare/workers-types" check_package "wrangler" check_package "better-sqlite3" echo "" echo "Done!" ```